books.google.com - This book argues that although Johnson's impeachment did not succeed in ousting him, it was a justified step. It describes the critical issues and events leading up to the impeachment and then discusses the trial itself: what the grounds were, what the different sides' motivations were and why the attempt...http://books.google.com/books/about/The_Impeachment_and_Trial_of_Andrew_John.html?id=4SZNiUAqCJAC&q=peachment&utm_source=gb-gplus-shareThe Impeachment and Trial of Andrew Johnson